Ship chevron doesn't track the camera in VR.

[VoxelStorm Bug Submitter]

Submitted by Norgg from IRC (~norgg on norgg.org)

[Riot]

don't add the arrow pointing at the playership in VR mode, resolves #91

→ <<cset 30a7933faf37>>

[Riot]

implement head tracking to angle conversion in vr mode, allows mouselook tracking functions to operate menus etc, resolves #27 and re #91

→ <<cset 2d29f686ba28>>

[Riot]

re-enabling playership pointer in vr now that we have head tracking to angle conversion, resolves #91 more comprehensively

→ <<cset 4b1fb5f417c1>>

[Riot]

implement head tracking to angle conversion in vr mode, allows mouselook tracking functions to operate menus etc, resolves #27 and re #91

→ <<cset 2d29f686ba28>>

[Riot]

re-enabling playership pointer in vr now that we have head tracking to angle conversion, resolves #91 more comprehensively

→ <<cset 4b1fb5f417c1>>